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Finding the Fourth Proportional to 3,454, 5,181.04 and 856.96

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Solution

The fourth proportional to 3,454, 5,181.04 and 856.96 is: 1,285.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,454 : 5,181.04 = 856.96 : x
  2. Step 2: Convert to fraction form
    3,454/5,181.04 = 856.96/x
  3. Step 3: Cross multiply
    3,454x = 5,181.04 × 856.96
  4. Step 4: Simplify right side
    3,454x = 4,439,944.04
  5. Step 5: Solve for x
    x = 4,439,944.04/3,454
  6. Step 6: Final answer
    x = 1,285.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.